Deprecate the "visuald-combined" generator.

Reimplement the VisualD generator based on the new target generation code and fix link dependencies for static libraries.

Apply the platform specific build settings to all targets. Fixes #201. Fixes #204.

Avoid "linking" static library targets against dependencies. Fixes #199.

Remove log noise.

Fix build settings used for dependencies that are referenced multiple times and remove the Mono-D generator.

Fix computation of build settings necessary for linking to library dependencies.

Implement a first version of a proper build ID computation. ...

Currently, the build ID is built from a few options that are not strictly necessary to be included (build flags and options) - it would be sufficient to just include the build settings introduced by the selected build type (and would reduce the number of build cache folders).

Implement individual building of dependencies.

Let "dflags" specified for build types also be affected by build requirements.

Avoid `\"` in quoted paths output by the VisualD project generator. Fixes #195.

Rename BuildOptions.noBoundsChecks to noBoundsCheck to be consistent with BuildRequirements.requireBoundsCheck.

Enforce build requirements when generating VisualD projects. Fixes #188.

Rename some BuildOptions to avoid D keywords.

Add suggestion to use --force to rebuild up-to-date targets.

Improve message when the build is skipped on up-to-date targets.

Only call setTarget() on buildsettings that are used to output the final binary. ...

See http://forum.rejectedsoftware.com/groups/rejectedsoftware.dub/thread/626/

Added quoting of import paths

Fix appending absolute paths for the working directory.

Fix missing log argument.

Add --force switch for "dub run" and "dub build" and fix --rdmd.

Make sure the target binary gets deleted when the linker has failed.

Add support for a "mainSourceFile" field. ...

The main source file is used as the root to access the whole package. This is important for dependency based building, such as with RDMD and for special build kinds, such as for a future unit test command. This also improves the robustness of "dub build --rdmd".

Main source files are automatically inferred as follows, if not explicitly given:
 1. search first in "source/", followed by "src/"
 2. take the first match of ("app.d", "main.d", "<pkgname>/main.d", "<pkgname>/<pkgname.d>") as the main file for the automatic "application" configuration
 3. take the first match of ("<pkgname>/all.d", "<pkgname>/package.d", "<pkgname>/<pkgname>.d") as the main file for the automatic "library" configuration

Add ".res" to the list of linker file extensions on Windows.

Fix unit test.

Fix duplicate file entries in generated VisualD projects. Fixes #168. ...

SourceFile.toHash was necessary for AAs to do anything useful and build==true files now have precedence over build==false files.

Fix --build=ddox.

Ability to generate dynlib projects with VisualD generator. ...

ie. <lib>2</lib>

The previous OSX fix is also needed for Linux, so change to version(Posix).

Fix "dub run" on OS X. ...

spawnProcess on OS X requires "./" to be appended for starting processes in the CWD.